Research Article
An Optimal Control Strategy for DC Bus Voltage Regulation in Photovoltaic System with Battery Energy Storage
Table 2
Battery module parameters (12 V, 4 Ah).
| | Model parameter | Value | Symbols [21] |
| | Cell type | Lead-acid (VRLA) | — | | Number of cells per module | 6 in series | — | | Rated capacity | 4 Ah | | | Battery reserve | 0.99 Ah | Bat_resv | | Nominal capacity | 0.85 Ah | | | Exponential capacity | 0.67 | | | Maximum voltage | 12.15 V | | | Exponential voltage | 12.05 V | | | Nominal voltage | 12 V | | | Charge current | 4 A | | | Internal resistance | 0.04 | | | Efficiency | 80% | Eta | |
aSeries battery | 1 | | |
aParallel battery | 1 | |
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Increased combinations of and scales up the battery modules to form a BES.
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